AirLink Communications Raven X HSDPA Guide de l'utilisateur Page 27

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Hardware Installation of the Raven XE
Rev 2.0 Jul.09 20
Note: When using a DC power
source (such as a solar cell),
Sierra Wireless recommends
placing a fuse (1-2 Amp) on the
line close to the power source to
protect your power source from
possible surges due to shorts or
other line issues.
TheDCpowercablepositiveleadshouldbeconnectedtothe
batteryorpowersourcepositiveterminal.Thepowercable
negativeleadshouldbeconnectedtothebatteryorpower
sourcenegativeterminal.
Tip: The DC power cable has a white wire lead in addition to the
power positive and negative. This is for a feature not present in the
Raven line modems. In the Raven XE, the white wire lead has no
function and can be ignored.
Warning: Explosion Hazard - Do not disconnect
equipment unless power has been switched off or
the area is known to be non-hazardous.
Connecting to a Computer or
other Device
Figure 4-3: Ethernet
TheEthernetportofyourRavenXEcanbeconnecteddirectly
toacomputerorotherEthernetdevicewitheitheracrossover
cableorastraightthroughcable.TheEthernetportonthe
RavenXEisautosensingandconnectsat10baseT.Ifyouare
connectingthemodemtoa
huborswitchyoushouldusea
straightthroughcableorusetheuplinkportonthehubor
switchwithacrossovercable.
Tip: On some computers, the TCP receive window may be set to 16
kbytes. To optimize the throughput of your Raven XE, it is recom
-
mended that you change the TCP window to 128 kbytes to 256 kbytes
using a TCP Optimizer.
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